<template>
  <div class="keyboard">
    <ul class="row row-0">
      <li class="pinky" id="esc">ESC</li>
      <li class="pinky" id="1">1</li>
      <li class="ring" id="2">2</li>
      <li class="middle" id="3">3</li>
      <li class="pointer1st" id="4">4</li>
      <li class="pointer2nd" id="5">5</li>
      <li class="pointer2nd" id="6">6</li>
      <li class="pointer1st" id="7">7</li>
      <li class="middle" id="8">8</li>
      <li class="ring" id="9">9</li>
      <li class="pinky" id="10">0</li>
      <li class="pinky">-</li>
      <li class="pinky">+</li>
      <li class="pinky" id="back">BACK</li>
    </ul>
    <ul class="row row-1">
      <li class="pinky" id="tab">TAB</li>
      <li class="pinky" id="Q">Q</li>
      <li class="ring" id="W">W</li>
      <li class="middle" id="E">E</li>
      <li class="pointer1st" id="R">R</li>
      <li class="pointer2nd" id="T">T</li>
      <li class="pointer2nd" id="Y">Y</li>
      <li class="pointer1st" id="U">U</li>
      <li class="middle" id="I">I</li>
      <li class="ring" id="O">O</li>
      <li class="pinky" id="P">P</li>
      <li class="pinky">[</li>
      <li class="pinky">]</li>
      <li class="pinky">\</li>
    </ul>
    <ul class="row row-2">
      <li class="pinky" id="caps">CAPS</li>
      <li class="pinky" id="A">A</li>
      <li class="ring" id="S">S</li>
      <li class="middle" id="D">D</li>
      <li class="pointer1st" id="F">F</li>
      <li class="pointer2nd" id="G">G</li>
      <li class="pointer2nd" id="H">H</li>
      <li class="pointer1st" id="J">J</li>
      <li class="middle" id="K">K</li>
      <li class="ring" id="L">L</li>
      <li class="pinky">:</li>
      <li class="pinky">''</li>
      <li class="pinky" id="enter">ENTER</li>
    </ul>
    <ul class="row row-3">
      <li class="pinky" id="left-shift">SHIFT</li>
      <li class="pinky" id="Z">Z</li>
      <li class="ring" id="X">X</li>
      <li class="middle" id="C">C</li>
      <li class="pointer1st" id="V">V</li>
      <li class="pointer2nd" id="B">B</li>
      <li class="pointer2nd" id="N">N</li>
      <li class="pointer1st" id="M">M</li>
      <li class="middle">,</li>
      <li class="ring">.</li>
      <li class="pinky">;</li>
      <li class="pinky" id="right-shift">SHIFT</li>
    </ul>
  </div>
</template>
<script lang="ts">
import { defineComponent } from "vue";
export default defineComponent({
  setup() {
    const methods = {
      init() {
        const keys = [..."ABCDEFGHIJKLMNOPQRSTUVWXYZ"];

        const timestamps: number[] = [];

        timestamps.unshift(getTimestamp());

        function getRandomNumber(min: number, max: number) {
          min = Math.ceil(min);
          max = Math.floor(max);
          return Math.floor(Math.random() * (max - min + 1)) + min;
        }

        function getRandomKey() {
          return keys[getRandomNumber(0, keys.length - 1)];
        }

        function targetRandomKey() {
          const key = document.getElementById(getRandomKey()) as HTMLElement;
          key.classList.add("selected");
        }

        function getTimestamp() {
          return Math.floor(Date.now() / 1000);
        }

        document.addEventListener("keyup", event => {
          const keyPressed = String.fromCharCode(event.keyCode);
          const keyElement = document.getElementById(keyPressed) as HTMLElement;
          const highlightedKey = document.querySelector(
            ".selected"
          ) as HTMLElement;

          keyElement.classList.add("hit");
          keyElement.addEventListener("animationend", () => {
            keyElement.classList.remove("hit");
          });

          if (keyPressed === highlightedKey.innerHTML) {
            timestamps.unshift(getTimestamp());
            const elapsedTime = timestamps[0] - timestamps[1];
            console.log(`Character per minute ${60 / elapsedTime}`);
            highlightedKey.classList.remove("selected");
            targetRandomKey();
          }
        });

        targetRandomKey();
      }
    };
    // methods.init();
    return {
      ...methods
    };
  }
});
</script>
<style lang="scss" scoped>
.keyboard {
  margin: auto;
  width: 950px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  box-sizing: content-box;
  border-radius: 30px;
  background-image: linear-gradient(60deg, #29323c 0%, #485563 100%);
  filter: drop-shadow(0 0 4px #fff);
}

.row {
  list-style: none;
  display: flex;
}

li {
  height: 3em;
  width: 3em;
  color: rgba(0, 0, 0, 0.7);
  border-radius: 0.4em;
  line-height: 3em;
  letter-spacing: 1px;
  margin: 0.4em;
  transition: 0.3s;
  text-align: center;
  font-size: 1em;
}

#tab {
  width: 5em;
}

#caps {
  width: 6em;
}

#left-shift {
  width: 8em;
}

#enter {
  width: 6em;
}

#right-shift {
  width: 8em;
}

#back {
  width: 5em;
}

.pinky {
  background-color: crimson;
  border: 2px solid crimson;
}
.pinky.selected {
  color: crimson;
}

.ring {
  background-color: coral;
  border: 2px solid coral;
}
.ring.selected {
  color: coral;
}

.middle {
  background-color: darkorange;
  border: 2px solid darkorange;
}
.middle.selected {
  color: darkorange;
}

.pointer1st {
  background-color: gold;
  border: 2px solid gold;
}
.pointer1st.selected {
  color: gold;
}

.pointer2nd {
  background-color: khaki;
  border: 2px solid khaki;
}
.pointer2nd.selected {
  color: khaki;
}

.fill-out-key {
  background-color: slategrey;
  border: 2px solid slategrey;
}

.selected {
  background-color: transparent;
  -webkit-animation: vibrate-1 0.3s linear infinite both;
  animation: vibrate-1 0.3s linear infinite both;
}

/* ----------------------------------------------
 * Generated by Animista
 * Licensed under FreeBSD License.
 * See http://animista.net/license for more info.
 * w: http://animista.net, t: @cssanimista
 * ---------------------------------------------- */

.hit {
  -webkit-animation: hit 0.3s cubic-bezier(0.39, 0.575, 0.565, 1) both;
  animation: hit 0.3s cubic-bezier(0.39, 0.575, 0.565, 1) both;
}

@-webkit-keyframes hit {
  0% {
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }
  100% {
    -webkit-transform: scale(1);
    transform: scale(1);
  }
}
@keyframes hit {
  0% {
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }
  100% {
    -webkit-transform: scale(1);
    transform: scale(1);
  }
}

@-webkit-keyframes vibrate-1 {
  0% {
    -webkit-transform: translate(0);
    transform: translate(0);
  }
  20% {
    -webkit-transform: translate(-2px, 2px);
    transform: translate(-2px, 2px);
  }
  40% {
    -webkit-transform: translate(-2px, -2px);
    transform: translate(-2px, -2px);
  }
  60% {
    -webkit-transform: translate(2px, 2px);
    transform: translate(2px, 2px);
  }
  80% {
    -webkit-transform: translate(2px, -2px);
    transform: translate(2px, -2px);
  }
  100% {
    -webkit-transform: translate(0);
    transform: translate(0);
  }
}
@keyframes vibrate-1 {
  0% {
    -webkit-transform: translate(0);
    transform: translate(0);
  }
  20% {
    -webkit-transform: translate(-2px, 2px);
    transform: translate(-2px, 2px);
  }
  40% {
    -webkit-transform: translate(-2px, -2px);
    transform: translate(-2px, -2px);
  }
  60% {
    -webkit-transform: translate(2px, 2px);
    transform: translate(2px, 2px);
  }
  80% {
    -webkit-transform: translate(2px, -2px);
    transform: translate(2px, -2px);
  }
  100% {
    -webkit-transform: translate(0);
    transform: translate(0);
  }
}
</style>
